Click the speaker icon on the Windows system tray to open the Volume control. Make sure the operating system Volume control is set and sounds are not muted.
Note: If the speaker icon is not on the windows task bar, press F1 while the Windows desktop is active and search for "Volume control" for instructions on how to change the volume and add the speaker icon to the task bar.

Double-click the speaker icon on the Windows system tray to open the Master Output Volume control panel. Make sure the audio devices are enabled and not muted in the Master Output Volume Control.
Test the audio in the Sounds and Audio Devices Properties dialog box. Select an active event sound in the Program events: box. Make sure the Play button is not grayed out. Select the sound you would like to associate to the event from the Sounds: drop-down list. Click the Play button. You should hear the sound you selected.

Make sure the latest audio drivers are installed.

Make sure the latest version of Direct X is installed using DXDIAG.EXE.

Use the System Restore utility in Windows XP to save the current configuration, then restore the original system configuration. If you need help using this utility, press F1 while the Windows desktop is active and search for "system restore". With other operating systems, use ConfigSafe to save the current configuration, then restore the original configuration. If you need help using ConfigSafe, press F1 while using ConfigSafe to access the help menu.

If equipped with an internal audio speaker, make sure the speaker connector is securely attached to the system board.